Know Your Science Variables - 20" x 26" - Classroom Poster 20 x 26" - Know Your Science Variables - Science variables are easier to understand when this poster is displayed in the room. This poster is DIGITALLY PRINTED on high-quality satin photo paper in small batches using pigment-based inks for maximum detail and fade resistance. The color reproduction and image sharpness is unmatched by mass-produced printing methods. Every poster comes LAMINATED with 3 mil thickness on both sides and trimmed to increase durablity and UV protection as well as saving you time. Simply unroll and display! All of our posters are completely ORIGINAL and designed by teachers who know what teachers want and what students need. They are perfect for the classroom, homeschooling, or the faculty room. Shipped in heavy-duty cardboard tubes.